Home / 13,690.63-20,539.59-4,330.82

Finding the Fourth Proportional to 13,690.63, 20,539.59 and 4,330.82

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Solution

The fourth proportional to 13,690.63, 20,539.59 and 4,330.82 is: 6,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.63 : 20,539.59 = 4,330.82 : x
  2. Step 2: Convert to fraction form
    13,690.63/20,539.59 = 4,330.82/x
  3. Step 3: Cross multiply
    13,690.63x = 20,539.59 × 4,330.82
  4. Step 4: Simplify right side
    13,690.63x = 88,953,267.16
  5. Step 5: Solve for x
    x = 88,953,267.16/13,690.63
  6. Step 6: Final answer
    x = 6,497.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.